Forces Electricity Waves Example resources: Q&A Marvin and Milo

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Presentation transcript:

Forces Electricity Waves Example resources: Q&A Marvin and Milo International Space Station kit Playground Forces Bloodhound Q&A

1. Forces What is a force? It is a push or pull

What forces can you name? Contact forces Forces acting over a large distance Forces acting over a short distance

A. Contact forces: Friction Tension Normal Air resistance Applied Spring Normal (a book sitting on a table) Applied (someone pushing a trolley)

B. Forces acting over a large distance: Electrical Magnetic Gravity

The Electromagnetic Force Strength 1 Acts Over Infinite range - gets weaker as the distance increases as 1/r2 Force Carrier photon Top Trump Holds protons and electrons together in atoms and holds atoms together to make molecules

Gravity

Gravity Strength Acts Over Force Carrier Graviton (not been detected) 0.0000000000000000000000000000000000001 = 1 x 10 -37 Acts Over Infinite range - gets weaker as the distance increases as 1/r2 Force Carrier Graviton (not been detected) Top Trump Keeps our feet on the ground and stars orbiting the centre of the Milky Way

Weight versus mass Earth beach ball and tennis ball DEMO

C. Forces acting over a short distance: Strong nuclear force Weak nuclear force

The Strong Force Strength 100 Acts Over 0.00000000000001m =10-15m is the size of an atomic nucleus Force Carrier Gluon Top Trump It holds the atomic nucleus together

The Weak Force Alpha Decay He nucleus Gamma Decay Beta Decay Electron or Positron

The Weak Force Strength 0.0000000000001 Acts Over 0.00000000000000001m=10-18m Force Carrier W and Z bosons Top Trump Is responsible for radioactivity

2. Electricity What is electricity?

Series circuit Camera Dust catcher Radio antenna

Parallel circuit Camera Radio antenna Dust catcher

Series circuit Camera Dust catcher Radio antenna

Parallel circuit Camera Radio antenna Dust catcher

3. Waves Sound Light Radiation

4. Example Resources

Marvin and Milo

International Space Station (ISS) Education Kit - Primary Designed by the European Space Agency to cover a wide range of topics, from science and maths to languages and PE.

Playground Forces

Bloodhound

Website links www.iop.org.uk www.nationalstemcentre.org.uk www.lfthomas.co.uk/ laura@lfthomas.co.uk

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